Somewhere between late spring and early summer, Alaskans receive an annual check from the state’s Permanent Fund, which basically cuts residents on a share of their state’s oil revenue. According to a study from the University of Alaska Anchorage, many recipients are spending their windfall on party supplies and have no need to steal while the money is flowing in.

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“If someone normally supplements their income with property crime, when they have that financial constraint relieved, they tend to do that less,” researcher Brett Watson told the Anchorage Daily News.

UAA studied 16 years of Anchorage police reports and discovered a 14% increase in substance abuse-related crimes like DUIs and disorderly conduct offenses the day after checks are sent. Crimes of that sort maintain a 10% spike in the month that follows the arrival of PFD checks.

Watson suggested that because all Alaskans get their check at the same time, that could contribute to a celebratory atmosphere, which contributes to heavy imbibing and subsequent drunken behavior.

That study also found that property crimes drop by 8% in the four weeks after residents of the 49th state get their money for nothing. Violent crime doesn’t appear to be effected by the annual state-wide payday.

Researchers add that the changes in complaints to police after checks have been distributed is rather modest overall, accounting for a 1% annual spike in booze-related offenses and a comparable drop in property crimes.

Since 1982, PFD checks have wound up in Alaskan’s mailboxes somewhere between May 5 and July 4 and can be as much as $2,072 per person and as little as $800 per resident, according to a Vox report.